Whiffletree



(No Model.)

H. CLARK.

WHFFLBTREE.

No.7296,275. Patented' Apr. l, 1884.

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W I TJV' ESSE S the bolts pass.

NITED STATES rricn.

PATENT WHIFFLETREE.

SPECIFICATION forming part of Letters Patent No. 296,275, dated April 1, 1884.

Application filed October 13, 1883. (No model.)

To @ZZ whom t may concern:

Be it known that I, HARDING CLARK, a citizen of the United States, residing at East Ganton, in the county of Bradford and State of Pennsylvania, have invented certain new and useful Improvements in Whiffietrees, of which the following is a specification, reference being had therein to the aecompan ying drawing.

My invention relates to a spring for a whiffletree; and it consists in the parts which will be hereinafter described, and pointed out inthe claim. y Y

The view in the accompanying drawing represents a plan of my spring and its connecting parts secured to a Whifdetree, a part of-said Whiietree being broken away, Wherebythe arrangement and location of the bolts in the whiflietreeopenings are shown.

The letter A represents the whifiletree pro-I vided with parallel openings A', and B is a plate secured thereto by bolts C. B B are openings in said plate, adapted to admit the bolts E.

D is the bow-spring, iixed to bolts E by the heads D.

E are the threaded ends 'of bolts E. By means of the threaded ends E and nuts F the slack may be taken from thesprin g D when said spring becomes weak from use.

G is a semieircuiar bar having side projections, provided with openings through which Said bar is secured on the bolts by the nuts F.

His a draft-chain provided with hook I. Said hook engages the bar Gr.

J J are loops or straps secured to the whifiietree. The ends of the spring D pass under said straps, and slide longitudinally therein when the spring is depressed or raised.

K represents the links or loops on the ends of the Whifletree, to which the trace-hooks L are secured. W'hen the spring D loses its resiliency from usage, the nuts F canbe screwed farther on the bolts E, thereby restoring the ediciency of said spring.

J J are rubber springs suitably secured to the whiiicletree. These springs are provided with openings for the bolts E to play through. These rubbers are secondary or supplementary springs, to relieve the main spring D when a heavy load is being drawn.

The spring mechanism herein shown and described is adapted to relieve the Whifiletrec and other connected parts from the jerk or sudden strain incident to a quick start. lThe draft-chain, being connected to the cross-bar G, draws the bolts partly through the Whitfietree when the horses are started, and thereby depresses the spring and prevents the jerk. The bolts E move freely through the Whiffiel tree-openings A and plate-openings B.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The Whifdetree herein described, consisting of the body A, having the loops J, the spring D, having the hooks iseeured in said loops, the openings A in the body, the lpacking J', the bolts D', passing through said packing and openings, and the draft-bar G, with its attachments for operating said spring, as shown and described.

In testimony whereof I affix my signature in presence of two Witnesses.

HARDING CLARK.

Vitnesses:

MIAL E. LILLEY, E. R. COLWELL. 

